Thermo Scientific AquaSensors™ AquaClear ™ Low Range Turbidimeter User Guide 3713. Performance SpecificationMeasurementRange: 0 to 100 NTU (Can range to 200 NTU when necessary).Resolution: 0.001 NTUAccuracy: +/-2% of reading or +/-0.015 NTU whichever is greater. +/-5% of reading above 40 NTU.Operational EnvironmentWater Temperature Range: -5°C to 50°CAir Temperature Range: -20°C to 60°CMaximum Flow Rate: 500 ml/min (7.9 gal/hr)Minimum Flow Rate: 250 ml/min (4 gal/hr)Power RequirementsVoltage Range: 24 VDC (Line power option available)Maximum Power: 8W with AV38 and Light SourceTypical Power: 6W with AV38 and Light SourceNote: Class II DC power supply requiredConstructionLight Source: White Light (Tungsten)Sample Chamber Material: ABS plasticSample Chamber Volume: 135 mlLight Source Housing Material: Anodized AluminumMounting Plate: 12x12 inches, 4 mounting holesSensor Head Material: Quartz Glass, Anodized AluminumWeight: 5.6 lbs